TROUBLESHOOTING | ||
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| Observe Safety Guidelines detailed in the beginning of this manual. |
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PROBLEMS (SYMPTOMS)
POSSIBLE
CAUSE
OUTPUT PROBLEMS
RECOMMENDED COURSE OF ACTION
| Porosity in the weld | 1. | Make sure proper gas type and |
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| flow rate is correct for procedure |
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| being used. Shield work from |
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| excessive outside air currents. |
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| 2. | Check gun and nozzle for leaks |
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| or obstructions. |
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| 3. | Make certain machine and wire |
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| feed settings are correct for |
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| process. |
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| Weld bead appears “cold”. | 1. | One or more of the machine set- |
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| tings may be wrong. Check the |
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| Background, Peak Current, |
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| Tailout and wire speed controls |
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| for proper settings. Adjust for |
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| optimum welding performance. |
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| 2. Make sure the Wire Type, and |
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| Wire Size switches are in the cor- |
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| rect position for the electrode |
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| wire being used. |
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| Molten weld puddle appears exces- | 1. | The Wire Type switch may be in |
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| sively “violent”. |
| the wrong position for the elec- |
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| trode wire being used. |
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| 2. | The Peak Current setting may be |
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| too high. Adjust for optimum |
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| welding performance. |
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If all recommended possible areas of misadjustment have been checked and the problem persists,
Contact your local Lincoln Authorized Field Service Facility.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
INVERTEC STT II (CE)
